In the mae sot district, tak province of Thailand,farmers irrigating crops using water mae tao and mae ku creeks, which have a zinc mine in the catchment,have been exposed to Cd contaminated rice and water over a long period that persones who mainly consumed rice grown in contaminated fields around mae sot had higher urinary Cd than those who did not. Cd intoxication has been managed y metal chelating compounds, but there are numerous undersirable side effects. Medical plants such as ginger,onion,and garlic have also been used for Cd detoxification. There is no report of the use of thunbergia laurifolia lindl.as a detoxifying agent.
Thunbergia laurifolia lindl.or rang jerd (in thal)has various uses in thai traditional. Aqueous extract of fresh and dried leaves,dried root and bark are used as an antidote for insecticide poisoning,and dried root is used as an anti-inflammatory and antipyretic agent. Other reported uses of the pland are for treatment of the plant are for treatment of amphetamine addiction reducing the toxicity of parathion insecticide and as antimicrobial agent and antioxidant.other study has reported that the aqueous extract of T. laurifolia Lindl.in the massive single dose was not toxic to rats ,did not affect the behavior of rats,did not induce free radical formation and was not mutagenic for bacteria.